Дэлхийн гайхамшгууд: Засвар хоорондын ялгаа
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Мөр 239:
* Cox, Reg, and Neil Morris, "''The Seven Wonders of the Modern World''". Chelsea House Publications: Library. October 2000. ISBN 0-7910-6048-9
* Cox, Reg, Neil Morris, and James Field, "''The Seven Wonders of the Medieval World''". Chelsea House Publications: Library. October 2000. ISBN 0-7910-6047-0
* D'Epiro, Peter, and Mary Desmond Pinkowish, "''What Are the Seven Wonders of the World? and 100 Other Great Cultural Lists''". Anchor.
* Morris, Neil, "''The Seven Wonders of the Natural World''". Chrysalis Books.
== Гадаад линкүүд ==
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